Novel waste sulfur pre-dispersion as well as preparation method and application thereof

A technology of pre-dispersion and sulfur, which is applied in the field of waste sulfur pre-dispersion and its preparation, can solve the problems of environmental pollution, resource waste, and difficult disposal of waste sulfur, and achieve the effects of reducing environmental pollution, avoiding waste, and simple process

Pending Publication Date: 2022-01-07
SHANDONG YANGGU HUATAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at problems such as difficult disposal of waste sulfur, waste of resources, environmental pollution, etc. in the production process of insoluble sulfur, and the current insoluble sulfur predispersion is not suitable for block In order to solve the problem of using waste sulfur as raw material in s

Method used

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  • Novel waste sulfur pre-dispersion as well as preparation method and application thereof
  • Novel waste sulfur pre-dispersion as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The new waste sulfur predispersion described in the present embodiment is made up of the following components by weight: 50 parts of by-product waste sulfur, 35 parts of EPDM-EPDM rubber, 5 parts of naphthenic oil, 10 parts of paraffin (SRPW) Part, the preparation method of this predispersion comprises the following steps:

[0038] Step 1: Accurately weigh the raw materials required for preparing the pre-dispersion according to the proportion;

[0039] Step 2: Put the carrier rubber EPDM-EPDM rubber into the internal mixer according to the proportion, and masticate for 3 minutes at the temperature of 150 °C and the speed of 60 r / min;

[0040] Step 3: Slowly add the naphthenic oil into the internal mixer at a temperature of 150°C and a rotational speed of 60r / min to prevent splashing. After the naphthenic oil is completely compatible with the rubber (observe the internal mixer There is no smooth oil surface on the middle rubber surface), and then slowly add small particle...

Embodiment 2

[0044] The new waste sulfur predispersion described in the present embodiment is made up of the following components by weight: 70 parts of by-product waste sulfur, 15 parts of EPDM-EPDM rubber, 5 parts of naphthenic oil, stearic acid (ST ) 10 copies.

[0045] The preparation method is the same as in Example 1. The obtained pre-dispersion is evenly dispersed and no sulfur crystals are precipitated when detected by a microscope at 100 times magnification.

Embodiment 3

[0047] The new waste sulfur predispersion described in this embodiment is made up of the following components by weight: 80 parts of by-product waste sulfur, 10 parts of EPDM-EPDM rubber, 3 parts of naphthenic oil, pentaerythritol stearate (PETS) 7 servings.

[0048] The preparation method is the same as in Example 1. The obtained pre-dispersion is evenly dispersed and no sulfur crystals are precipitated when detected by a microscope at 100 times magnification.

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Abstract

The invention discloses a novel waste sulfur pre-dispersion as well as a preparation method and application thereof. The novel waste sulfur pre-dispersion consists of the following components in parts by weight: 50-80 parts of waste sulfur, 10-35 parts of carrier rubber, 1-5 parts of softening oil and 5-10 parts of a dispersing agent. According to the method, the insoluble sulfur byproduct waste sulfur is processed into the pre-dispersion, so that better and more accurate recycling and reusing are facilitated. By adopting the novel waste sulfur pre-dispersion, the dispersion rate and environmental protection property of the insoluble sulfur byproduct waste sulfur in the rubber product preparation process can be improved, the weighing is convenient, the accuracy of a formula and the dispersity of effective components of the insoluble sulfur byproduct waste sulfur are improved, the dust pollution is effectively reduced, the working environment is improved, the cost performance is high, the application range is wide, and the market prospect is wide.

Description

technical field [0001] The invention relates to a novel waste sulfur predispersion and its preparation method and application, and belongs to the technical field of rubber additives and its preparation. Background technique [0002] In recent years, with the continuous development of rubber products, especially the development of radial tires, insoluble sulfur has become an indispensable vulcanizing agent for the production of high-quality radial tires. At present, the product yield of batch insoluble sulfur is generally between 40% and 50%. In the production process of insoluble sulfur, more than 50% of the sulfur enters the washing liquid in the extraction and separation process, and then the solvent and sulfur are separated by distillation. The distilled solvent is sent to the previous process for recycling, while the waste sulfur is generally reddish-brown due to the stabilizer in the insoluble sulfur production, and cannot be returned to the previous sulfur melting proc...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L9/06C08L9/00C08L91/06C08K3/06
CPCC08L23/16C08L9/06C08K3/06C08L91/06C08L9/00
Inventor 赵之朋李云峰杨振林郭虎徐霄平
Owner SHANDONG YANGGU HUATAI CHEM
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